2 c. flour (do not pack)
1 1/2 c. sugar
3 tsp. double acting baking powder
1 tsp. salt
1/2 c. salad oil
7 unbeaten egg yolks (medium eggs)
3/4 c. cold water
2 tsp. vanilla
Grated rind of 1 lemon

Set oven at 325 degrees. Sift ample amount of flour on paper. Sift flour, sugar, baking powder and salt together in a bowl. Make a well and add in order, oil, yolks, water, vanilla and lemon rind. Beat until smooth. In another bowl beat egg whites until very stiff, add 1/2 teaspoon cream of tartar. Beat until they make peaks, stiffer than for angel food cakes or meringues. Fold into first mixture. Put in tube pan 4 inches deep. Bake 55 minutes at 325 degrees. Increase heat to 350 degrees for 10 to 15 minutes or until top springs back when slightly touched. Turn upside down immediately, placing over neck of bottle or funnel until cool.